364021 Radioactive decay will occur as follows
\(_{86}R{n^{220}}{ \to _{84}}P{o^{216}}{ + _2}H{e^4},{\rm{half}} - {\rm{life}} = 55\;s\)
\(_{84}P{o^{216}}{ \to _{82}}\;P{b^{212}}{ + _2}H{e^4},{\rm{half}} - {\rm{life}} = 0.66\;s\)
\(_{82}\;P{b^{212}}{ \to _{82}}\;{B^{212}} + {\lambda ^0}e,{\rm{half}} - {\rm{life}} = 10.6\;h\)
If a certain mass of radon \(\left( {Rn = 220} \right)\) is allowed to decay,
then after 5 min the element with greater mass will be

364022 A radio isotope \(X \)with a half-life \(1.4 \times {10^9}\) yr decays to \(Y\) which is stable. A sample of the rock from a cave was found to contain \(X\) and \(Y\) in the ratio 1:7. The age of the rock is

364023 The masses of two radioactive substances are same and their half lives are 1 year and 2 years respectively. The ratio of their activities after 6 years will be

364024 Ba-122 has half-life of 2 min . Experiment has to be done using Ba-122 and it takes 10 min to set up the experiment. If initially \(80{\rm{ }}g\) of \(\mathrm{Ba}-122\) was taken, how much Ba was left when experiment was started?

364021 Radioactive decay will occur as follows
\(_{86}R{n^{220}}{ \to _{84}}P{o^{216}}{ + _2}H{e^4},{\rm{half}} - {\rm{life}} = 55\;s\)
\(_{84}P{o^{216}}{ \to _{82}}\;P{b^{212}}{ + _2}H{e^4},{\rm{half}} - {\rm{life}} = 0.66\;s\)
\(_{82}\;P{b^{212}}{ \to _{82}}\;{B^{212}} + {\lambda ^0}e,{\rm{half}} - {\rm{life}} = 10.6\;h\)
If a certain mass of radon \(\left( {Rn = 220} \right)\) is allowed to decay,
then after 5 min the element with greater mass will be

364022 A radio isotope \(X \)with a half-life \(1.4 \times {10^9}\) yr decays to \(Y\) which is stable. A sample of the rock from a cave was found to contain \(X\) and \(Y\) in the ratio 1:7. The age of the rock is

364023 The masses of two radioactive substances are same and their half lives are 1 year and 2 years respectively. The ratio of their activities after 6 years will be

364024 Ba-122 has half-life of 2 min . Experiment has to be done using Ba-122 and it takes 10 min to set up the experiment. If initially \(80{\rm{ }}g\) of \(\mathrm{Ba}-122\) was taken, how much Ba was left when experiment was started?

364021 Radioactive decay will occur as follows
\(_{86}R{n^{220}}{ \to _{84}}P{o^{216}}{ + _2}H{e^4},{\rm{half}} - {\rm{life}} = 55\;s\)
\(_{84}P{o^{216}}{ \to _{82}}\;P{b^{212}}{ + _2}H{e^4},{\rm{half}} - {\rm{life}} = 0.66\;s\)
\(_{82}\;P{b^{212}}{ \to _{82}}\;{B^{212}} + {\lambda ^0}e,{\rm{half}} - {\rm{life}} = 10.6\;h\)
If a certain mass of radon \(\left( {Rn = 220} \right)\) is allowed to decay,
then after 5 min the element with greater mass will be

364022 A radio isotope \(X \)with a half-life \(1.4 \times {10^9}\) yr decays to \(Y\) which is stable. A sample of the rock from a cave was found to contain \(X\) and \(Y\) in the ratio 1:7. The age of the rock is

364023 The masses of two radioactive substances are same and their half lives are 1 year and 2 years respectively. The ratio of their activities after 6 years will be

364024 Ba-122 has half-life of 2 min . Experiment has to be done using Ba-122 and it takes 10 min to set up the experiment. If initially \(80{\rm{ }}g\) of \(\mathrm{Ba}-122\) was taken, how much Ba was left when experiment was started?

364021 Radioactive decay will occur as follows
\(_{86}R{n^{220}}{ \to _{84}}P{o^{216}}{ + _2}H{e^4},{\rm{half}} - {\rm{life}} = 55\;s\)
\(_{84}P{o^{216}}{ \to _{82}}\;P{b^{212}}{ + _2}H{e^4},{\rm{half}} - {\rm{life}} = 0.66\;s\)
\(_{82}\;P{b^{212}}{ \to _{82}}\;{B^{212}} + {\lambda ^0}e,{\rm{half}} - {\rm{life}} = 10.6\;h\)
If a certain mass of radon \(\left( {Rn = 220} \right)\) is allowed to decay,
then after 5 min the element with greater mass will be

364022 A radio isotope \(X \)with a half-life \(1.4 \times {10^9}\) yr decays to \(Y\) which is stable. A sample of the rock from a cave was found to contain \(X\) and \(Y\) in the ratio 1:7. The age of the rock is

364023 The masses of two radioactive substances are same and their half lives are 1 year and 2 years respectively. The ratio of their activities after 6 years will be

364024 Ba-122 has half-life of 2 min . Experiment has to be done using Ba-122 and it takes 10 min to set up the experiment. If initially \(80{\rm{ }}g\) of \(\mathrm{Ba}-122\) was taken, how much Ba was left when experiment was started?